Safety, Sanitation, and Infection Control in the Teaching Lab
What this domain tests
This domain asks whether you can teach and enforce the infection-control hierarchy, OSHA bloodborne pathogen requirements, chemical and electrical safety, and correct implement reprocessing in a teaching lab full of novices.
The cleaning hierarchy
- Cleaning: soap or detergent and water remove visible debris; it does not kill pathogens.
- Disinfection: an EPA-registered hospital disinfectant kills pathogens on nonporous surfaces and implements, used at the label's contact time (commonly around 10 minutes for immersion).
- Sterilization: autoclave or similar kills spores and all microorganisms; used for items that penetrate skin. Disinfectants are deactivated by visible debris, so implements must be cleaned and dried before immersion. UV cabinets are not a substitute for chemical disinfection of implements used on clients.
OSHA bloodborne pathogens (29 CFR 1910.1030)
Written exposure control plan, hepatitis B vaccination offered at no cost within 10 working days of assignment, gloves and other PPE, labeled sharps containers, and post-exposure evaluation with a confidential medical record. Any exposure incident (needle, cut, splash to eyes or mouth) is washed, reported immediately, and documented.
Chemical and physical safety
Keep SDS for every product accessible; store chemicals in original labeled containers away from heat; ventilate for monomers, relaxers, and aerosols; never mix products; use GFCI protection and keep cords away from water; secure sharp tools; post spill and evacuation procedures; no food or drink in the lab.
Worked example
After a clipper cut, a student sprays the blade with disinfectant while hair clippings remain. The instructor stops the service and corrects the sequence: brush off debris, wash the blade with soap and water, dry it, then apply or immerse in an EPA-registered hospital disinfectant for the full label contact time, dry, and store in a clean closed container. Reasoning: organic debris inactivates the disinfectant, and shortened contact time leaves pathogens viable, so the earlier spray provided no real protection.
Traps that cost marks
Treating sanitizing and disinfecting as synonyms; wiping a disinfectant off immediately; using UV cabinets or barbicide jars with items still contaminated by hair; skipping handwashing before gloving; storing disinfectant solution past its label life; letting students carry a blood exposure without reporting; assuming an autoclave is safe for plastics that melt.
Key points
- Clean before you disinfect; debris inactivates disinfectants.
- Honor the EPA-registered product's label contact time.
- UV cabinets do not replace chemical disinfection of client implements.
- OSHA requires an exposure control plan and a free hepatitis B vaccine offer.
- Every exposure incident is washed, reported, and documented.